Combination sand pump and bailer



July 12, 1932. D EV WEBBER 1,866,828

COMBINATON SAND PUMP AND BAILER Filed June 2l, 1928 m /mmgm en; M 37 www ATTORNEY Patented July 12, 1932 DONALD E. WEBBER, OF SAPULPA, OKLAHOMA, ASSIGNOR TO MILLER COMBINATION.

PATENT OFFICE BAILER AIND PUMP COMPANY,A OF SAPULPA, OKLAHOMA, A CORPORATIONQF Om- HOMA COMBINATION SAND Application filed .Tune 21,

My invention relates to bailers and more particularly to a device of that character for use in well drilling operations for removing sand, vdetritus orother deleterious substances from the bottom of a well and for taking samples of fluid from the well; the principal object of the invention being to provide greater effective lifting space for a bailer between the floor and crown block of a derrick, to eliminate the rod connection ordinarily provided between the plunger of a bailer and a lifting cable, and to connect the cable directly to the plunger, thereby permitting the use of bailers of greater length in the derrick space.

Further objects of the invention are to provide an eective liquid seal between the plunger and the cylinder of the bailer for the intake Istroke of the plunger, to lubricate the members in their sliding contact, and to prevent sand or detritus from adhering to the walls of the members.

ln accomplishing these and other objects of the invention, l have provided improved details of structure, the preferred forms of which are illustrated in the accompanying drawing, wherein:

Fig. 1 is a vertical section of the lower portion of an oil well, illustrating application of my improved bailer thereto.

Fig. 2 is an enlarged longitudinal section of the bailer showing the plunger at the upper limit of its travel and the intake and outlet valves closed.

Fig.y 3 is a detail perspective view of parts of a disassembled. plunger.

Fig. 4 is a detail perspective view of the lower portion of the bailer cylinder and thek intake valve cage, particularly illustrating the means for joining and locking the members in assembly.

Referring in detail to the drawing, 1 desi nates an oil well extending through cap roc 2 above the oil sand 3 and terminating in a pocket 4, and 5 designates sand or dbris accumulated in the bottom of the pocket as a result of shooting of the well, reaming, or natural dislodgment from the walls of the pocket.

The well hole above the cap rock is lined PUMP AND BAILER 1928. Serial No.- 287,091.

with casing 6 supported by a shoe 7 on the cap rock, the casing servlng as a channel through which a bailer 8 constructed in accordance with my invention may be lowered int-o a well for taking samples of fluid or for cleaning out the' dbris collected at the bottom of the well hole.

The bailer 8 comprises a barrel 9 of less diameter than the casing so as to pass freely into the well, and fixed in the lower end of the barrel a reinforcing sleeve 10 having spaced .annular shoulders 11 and 12 formed on its inner wall for engagement with various types of valve cages, the lower shoulder 11 being herein shown engaged by a valve cage 13 especially adapted for well cleaning purposes.

Formed in the lower end walls of the barrel and sleeve are bayonet slots 14, one of the slots having an upward extension 15 in the upper end of which is hingedly mounted. a locking tongue 16 adapted for locking the cage in assembled relation with the barrel as will hereafter be described.

The valve cage 13 comprises a ring portion 17 having an outside diameter equal to the outside diameter of the barrel and a collar 18 protruding upwardly from the ring and of less diameter than the ring, to .provide a shoulder 19 engageable with Vthe end of the barrel. The collar 18 fits within the sleeve 10 with its upper end abutting the shoulder 11, and stop lugs 20 equally spaced on the periphery of the collar are received b the slots 14 and locked therein by means o the locking tongue 16, asnshown in Fig. 2.

Hingedly mounted Aon the collar 18 is a clapper or check valve 21 fitting in a seat. 22 at the upper end of an opening 23 (Fig. 1) extending centrally through the upper portion of the valve cage. A cutter blade 24 depending from the ring 17 is provided with a transversely extended opening 25 communieating with the opening 23, so that the intake of fluid through the openings into the barrel is controlled by the Valve 21.

Fitted in the upper end of the barrel is a collar 26 having'a shouldered flange 27 at its upper end resting on the top ofthe barrel, the collar being secured to the walls of the barrel by rivets or like fastening means 28, the

10oY l collar providing an inwardly extending plunger-engaging shoulder in the barrel.

Extending upwardly from the top of the collar and preferably formed integrally therewith are bails 29 carrying a neck 30 axially aligned with the barrel, the neck being provided with a central opening 31 for receiving a cable 32 for free slidable movement therein. Annular corrugations 33 are provided on the eriphery of the neck for engagement by Shing tools for recoverin the bailer from a` well, in the event of brea age of the cable.

Mounted for free slidable movement in the barrel 9 is a plunger 34 including a tubular body 35 having materially less diameter than the barrel to form an annularchannel between the plunger and the barrel, and reduced at its upper end to form a neck 36 and provided throughout its length with equally spaced annular grooves 37.

. valve cage 41 so that the fluid admitted to The opening 38 through the body 35 is restricted at its upper end and provided with a valve seat 39 for seating a valve 40.

Fitted on the neck 36 is a valve cage 41 equal in outside diameter to the body.,35 and having equally spaced openings 42 registering with openings 43 in the neck (Fig. 3) and rivets 44 (Fig. 1) applied through the openings serve to secure the members in as- Sembled relation.

Formed on the top of the cage 41 is a stem 45 having a ring 46 at its upper end to receive the cable 32, the cable being inserted through and tied immediately above the ring to permit the cable to pass through the collar 26 and lift the plunger 34 to the upper limit of its travel. o

Extendingmpwardly into the stem 45 from within the cage 41 is a threaded socket 41 engaged by a -pin 48, the pin depending centrally into the valve seat opening and being slidably engaged by the valve 40 for retaining the valve in its proper working relation with the valve seat 39.

Ports 49 arey provided in the top of the the barrel through the intake valve 21 during the downward movement of the barrel may pass by the check valve 40 during the downward movement of the plunger in the barrel and thus be trapped in the portion of the barrel above the plunger. o

In practicing with my improved bailer, its

' operation is as follows:

. nected with the sand line supports the bailer Vthrough engagement of' the top of the valve cage 41 of the plunger with the collar 26 in theupper end of the barrel.

. When the bailer is being lowered intO a well, the parts remain in the position shown in Fig. 2 until the column of uid is encountered, whereupon the valve 21 swings open and the fluid passes upwardly into the barrel,

maining open so that the fluid continues to v pass through the plunger and valve cage, until the plunger arrives at the lower limit of its travel and rests on the reinforcing sleeve 10, as shown in Fig. 1.

With the bailer resting on the bottom of the well pocket and with the plunger in its down position, the bailer is situated for receiving a fluid' charge of sand and dbris from the bottom of the pocket. As lifting movement is imparted to the sand line the plunger is drawn upwardly in -the barrel 9. Since the plunger is loosely fitted in the barrel, the fluid trapped above the valve cage 'escapes between the walls of the plunger and barrel, and is interrupted in its downward passage by the grooves in the plunger, thereby effecting a fluid seal and lubricating the contact surface of the members.

The upward movement of the plunger thus sealed and packed results in the opening of the valve 2l and the drawing of a charge thlrough the openings 25 and 23 into the barre When the plunger arrives in engagement with the collar 26 at the top of the barrel, the barrel starts upwardly with the plunger, thei valve 21 closes, thus trapping the fluid charge drawn into the bailer, and the bailer is then llifted from the well.

The key 16 may then be pivoted out of locking position, the cage 13 rotated to disengage the bayonet joint members, and the cage removed to permit outflow of the charge.

The bailer thus described occupies a vertical space equal only to the length of the barrel when withdrawn and will therefore require a relatively small space above the floor of the derrick in dischargingl positions, and a relatively longer rbailer may be employed in limited derrick s ace.

What I claim and) desire to secure by Letters Patent is:

1. In a bailer including a barrel and a plunger having circumferential spaced apart oil retaining ooves in its outer surface reciprocable in t e barrel and having a reduced opening in its upper end, means for supporting thev barrel from the plunger including an inner shoulder on the barrel, and a valve cage having air passage means secured to the upper end of the plunger engageable at its top with said shoulder, a cable-receiving Lacasse ring carried by the cage extensible into the barrel, a valve-guiding pin removably secured in the interior of the cage, and a valve freely slidable on said pin controlling said opening. i

2. lu a device of the character described including-a barrel having an internal shoulder at the upper and lower ends thereof and a valve controlled openingin its bottom, a cable guide connected to the barrel in spaced relation with the upper end thereof, a cable extending through said guide, and a plunger provided with fluid receiving and retaining grooves in its outer face located in the barrel, a valve cage fixed to the upper end of the plunger and having sucient diameter to engage the shoulder' at the upper end of the barrel upon upward movement of the plunger in the barrel and provided with a cable-receiving ring freely movable through the opening formed by said shoulder at the upper end of the barrel.

3. In a device of the character described, a barrel having a bottom provided with a valve controlled opening, internal stop shoulders adjacent its upper'and lower ends, and a hollow plunger reciprocable in the barrel, supporting means 4for the lunger including an apertured disk engageallle with the shoulder at the upper end ofthe barrel having a depending skirt fixed to the plunger so as to form a valve chamber, an axial boss on said disk adapted to receive a cable, a valve operable in said chamber for closing the upper end of the plunger, and a guide pin depending from said disk, said guide to extend through said valve.

4;. A combination sand pump and bailer comprising' a tubular barrel, a cage havingl a valve controlled opening therethrough carried by theV lower end of said barrel', a sleeve located within said barrel and above said pin adapted cage, a hollow piston closed at its upper end located in and of less diameter than said barrel, said piston having spaced apart fluid receiving and retaining circumferential` grooves formed in its outer face, a valve controlled passage through the upper end of said piston, a cage having an apertured top se- I cured to the upper end of said plunger, a guide pin depending in said cage and passing axially through said valve, means extending upwardly, from said cage for the attachment of a line, a collar secured in the upper end.

of said barrel, a neck having a central opening located axially above said barrel, and bails for securing said collar and neck together.

In testimony whereof I aix my signature.-

DONALD E. WEBBER. 

